bug fix

app.py

@@ -127,8 +127,9 @@ def run_simulation_interface(ruleset_file, chain_files, iteration_count, initial
     df.to_csv(csv_buffer, index=False)
     csv_bytes = csv_buffer.getvalue().encode('utf-8')
 
-    # FIX: Use gr.update() to update component properties
-    return df, stats_report, gr.update(value=csv_bytes, visible=True, name=df_path), gr.update(value=stats_report.encode('utf-8'), visible=True, name=report_path)
+    # FIX: Removed the 'name' keyword argument from gr.update for the File component
+    # as it causes a TypeError in recent Gradio versions.
+    return df, stats_report, gr.update(value=csv_bytes, visible=True), gr.update(value=stats_report.encode('utf-8'), visible=True)
 
 # --- COST CALCULATION LOGIC ---
 def run_cost_calculation_logic(chain_files, item_files):